Hydraulic vise.



PATENTBD APR.16. 19h?.

H. DE H. BR

HYDRAULIC N FILED Mu 24. 190s llli: "3

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Non 850,865.

PATENTED APR. 16, 1907.

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Specification of Letters Patent.

Patented April 16, 1907.

Application led Kay 24, 1906. Serial No. 318,600-

' sists of an im roved structure designed more particularly or coniining the leavesof elliptic springs preparatory to banding the same, or any class of work requiring great holding l power and quickness of operation.

My improved vise is operated by fluid-pressure, which is so applied and controlled in operating the structure that pressure is constantly maintained on one side-of the piston to hold the jaws of the vise open.

My invention is fully shown in the accompanying drawings, in Whichv Figure 1 is a sectional elevation of my improved vise, taken on the line a a, Fig. 2.

ig. 2 is a rear elevation of the same; and Fig. 7

. 3 is a sectional plan view taken on the line b I represents the fixed jaw of the structure, secured, by means of bolts 2, to a support 3 of any suitable character or fastened directly to a bench. The movable jaw 4 is pivotally connected at 5 to lugs 6, carried by the lower portionof the fixed jaw. Mounted -on the support 3 and secured thereto by bolts 7 is a metal block 8, to which the up er portion of the fixed jaw is also connected) by means of bolts 9.

The block 8 is recessed at 10 for the reception of a piston 11, carried by a rod 12, pivotally connected at 13 to a stem 14, projecting through an opening 15 inthe upper art of the movable jaw. The stem 14 is co ed to said'aw by an enlarged nut 16, having a rounde portion 17, ttlng the rounded surface 18 of the aperture 15 in said jaw and 'thereby providing a freely-adjustable connection. The nut 16 is confined to the stem by means of a lock-nut 19.

The piston includes a guiding-stem 20,

i ,abutting its head and conned thereto by means of a bolt 21 and nuts 22 and 23. The endof the stem 20 has a shoulder fitting the chamber 10, and this end is recessedat 24 to receive the reduced end of the piston-head.

Packing 25 is held between said stem and the flange 1'1a of the piston. The stem 20 asses through a collar 26, secured to the bloc 8 by studs 27., and packing 28 is provided, confined by the usual gland 29, also mounted-on the studs 27 and held in place by the usual nuts 30.

At the rear of `the piston a contracted chamber 31 is formed between the Wall of the cilinder and the stem 20, and Awithin vthis c amber pressure passing from the main supply-pi e 32 and pipe 33 is constantly maintained? tending to keep the jaws of the vise open. The pipe 32 also communicates `With a valve 34, normally cutting oif the assage of pressure to pipe 35, leading to the c amber 10, such chamber bein normally open to the atmosphere through the pipes 35 and 36, so

that there will be nothing to prevent the same, pressure is admittedl to the pipe 35 by` shifting the valve 34, such action closing the passage `to the exhaust extension 36 and placing the main supply-pi e 32 in communication With the pipe 35. ull pressure entering the chamber 10 will overcome the constant pressure in the smaller 'chamber 31 behind the piston, and the latter will be moved to effect the closing of the jaws. To release the jaws, the valve is shifted to the position shown in Fig. 3, whereupon the full pressure vwill be directed to the rear of the piston and the pressure at the front exhausted.

The passage in the block 8 for the pistonrod 12 1s .also packed, as indicated at 37, and a gland 38, secured by bolts 39 to said block, is em loyed to hold this acking in place. The iigred jaw of the vise 1s 'preferablyjpro- -vided with a Wear-plate 40, securedV by adj ustable screws to said jaw.

my invention is extremely simple and compact. The parts arefew, and' it can be readlly and rmly secured topany suitable su port or a work-bench. The operation of t e vise is extremely simple, and the shifting of the movable' jaw to engage or release the Work is very quickly accomplished.

For additional strength and rigidity I may rovide ears or lugs 41 at the sides of the block ,or backing structure 8, as shown by dotted lines, through which lugs bolts may be, assed into the support 3.

claim-4 1 The combination, in a hydraulic vise, of a support, a member carried thereby *and of the same will be The construction forming the subject of I' IOO forming a fixed jaw, a backing structure a rod connected to the stem of the mov'able mounted on the support immediatelybehind the member forming the fixed jaw and to lwhich the latter is secured, said backing structure being-recessed to form a chamber, a Huid-controlled piston within said chamber, a movable member forming another jaw and hinged to the member forming the fixed jaw, and a connection between said movable member an`d the iston whereby the vis may be opened ,andp closed by the movement of said piston.

2. The combination, in a hydraulic vise, of a support, a member carried thereby and forming a fixed jaw, a backing structure mounted on the su port immediately behind the vmember forming the fixed jaw and to which the latter is secured, said backing structure being recessed to forma chamber, a Huid-controlled iston within said chamber, a movable mem er forming another jaw and i hinged to the member forming the fixed jaw,

Ass

a connection between said movable member and the piston whereby the vise may be o ened and closed by the movement of said piston, and a guiding-stem at the rear end of said piston.

3. The combination, in a hydraulic vise, of a support, a member carried 'thereby and forming a fixed jaw, a backing structure mounted on the support immediately behind,

forming a fixed jaw, a backing structure mounted on the support immediately behind the member formlng the fixed jaw and to which the latter is secured, said backing struclture beingrecessed to form a chamber, la

fluid-controlled iston within said chamber, amovable mem er forming another jaw and hinged to the member forming the fixed jaw, a stem having a freely-adjustable connection with the member forming the movable jaw, a piston-rod pivotally connected to said stem whereby the visemay be opened and closed by the movement of said piston, and a guiding-stem at the rear end of said piston.

5; The combination of the fixed jaw of a vise, a block carrying the same, a support for said jaw and its carrying structure, a movable j aw pivotally hung to the fixed jaw and having an adjustable stem, said carrying structure being bored to form a chamber, a

piston mounted in said chamber and havingv jaw to operate the same, means for applying pressure to move the piston in opposite d1- rections, the pressure on one side of said piston being constant and serving to maintain the vise normally in the open position, and means for controlling and directing said pressure. l

6. The combination of the fixedjaw of a vise, a block carrying the same,.a support for said 'aw and its carrying structure, a movable jaw pivoted to the fixed jaw and having a stem, said carrying structure being boredto form a chamber, a piston mounted in said chamber' and having a rod connected to the stem of the movable aw to operate the same,

a guide for the rear end of said piston, stuffing-boxes for the piston-rod and said guide, means for applying pressure to said piston to move the same in opposite directions, the pressure on one side of said piston being constant and serving to maintain the valve normally in the open position, and a valve for controlling and directing said ressure.

7. The combination, in a hy raulic vise, of a member forming a xed jaw, a movable member forming another jaw pivotallyhinged to the fixedjaw and coacting with the latter, and Huid-operated means for openv ing and closing the vise, said means including a rod connected with the member forming the movable jaw and freely reciprocable through the memberforming the fixed jaw, a piston to which said rod is attached, and a guiding-stem at the rear end of said piston.

8. The combination, in a hydraulic vise, of a member suitably supported and forming a fixed jaw, a member pivotally hung from said fixed jaw and forming a movable jaw coacting therewith, fluid-operated means for IOO o ening and closing the vise, said means inc uding a rod connected to the movable jaw and freely reciprocable through the fixed jaw, a piston to which said rod is attached, and a guiding-stem at the rear end of said piston, and a stuffing-box carried by the fixed jaw through which said piston-rod passes.

9. The combination, in a hydraulic vise, of a fixed member suitably supported and forming a jaw, a movable member pivotally hung from said fixed jaw and forming another jaw,

fluid-operated means for o ening and closing opened and closed by the movement of said or a sunport, a member forming .a xed jaw secure to said support, a movable member pivotally hung to the said xed member. and

orming a jaw coacting therewith, fluid-operated means for o ening and closing the vise, said means including a rod exibly connected to the movable jaw and freely reci rocable through the iixed jaw, a piston to wlllichsaid 'rod is attached, a guiding-stem for the rear end of said piston, and a `backing member disposed back of the fixed jaw and to which the latter is secured, said' backing member having a chamber in which the piston is movable.

11. The combination, in a hydraulic vise, of a fixed jaw, a backing structure to which the same is secured, a jaw hinged to the `ixed jaw and coacting therewith, a piston movable within the chamber formed in the backing structure whereby the vise may be opened and closed, a rod leading from said iston to the movable jaw and connected t erewith close to the engaging faces of said jaws, the fixed jaw being recessed for the free passage of said rod, means for controllinguid-pressure to o crate said piston, and a guidingstem for t e rear end of the same.

12. The combination, in a hydraulic vise,

of a fixed jaw, a support, a backing structure carried by said support, said structure being secured directly to said fixed jaw and bored to form Aa chamber, a piston within said chamber, a member hinged to the fixed jaw -and forming a movable jaw coacting therewith, a connection between said piston and the movable jaw whereby the vise may be plston, means for moving said piston, and a guiding-stem at the rear end of4 the same, said guiding-stem being reciprocable through and closing the rear end of the chamberin which the piston is movable'.

13. The combination, in a hydraulic vise, ofA a Xed jaw, a bacln directly to said jaw an bored to form a chamber, a piston movable within said chamber, a jaw hinged to the fixed jaw and coacting therewith, a stem having a freely-adjustable connection with said hinged jaw, a istonrod pivotally connected'to said stemw ereby the movable j aw may be opened and closed by the movement of said piston, means for moving said piston, and a'gtuiding-stem for the same.

14. The combination, in a hydraulic vise,

of a support, a xed jaw carried by said supstructure .secured port, a backing structure secured directly .to

said jaw, said backing structure being also carried by said support and bored to form a chamber, a iston within said chamber, a jaw hinged to t e fixed jaw and. coacting therewith, a stem adjustably connected to saidv hinged `aw, a rod attached'to the piston and pivotal y connected with said stem whereby the movable jaw may be Aopened and closed by the movement of said piston, means for moving said piston, and a -guiding-stem for the same. A

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HOLSTEIN DE HAVEN BRIGHT.

Witnesses:

MURRAY C. BOYER, A Jos. H. K Lnnv. 

